| 单词 | ice core |
| 释义 | > as lemmasice core ice core n. a cylinder of ice drilled out of a glacier or ice sheet (esp. one in a polar region), typically analysed to obtain information about atmospheric change over time.Ice cores may be up to several thousand meters long, representing hundreds of thousands of years of snow accumulation. ΚΠ 1949 Geogr. Mag. 22 284/2 An attempt will be made..to extract an ice core 150 metres long. 1983 T. Hoyle Last Gasp (1990) 19 Nick Power's work as a glaciologist involved extracting ice cores from a mile and a third beneath the polar ice cap to investigate their fifty-thousand-year-old history. 2009 New Yorker 29 June 41/2 He offered a presentation on what ice-core records show about the sensitivity of the climate to changes in greenhouse-gas concentrations. < as lemmas |
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